Blogs

Online writing using blogs offer several enhancements over the traditional paper journal or word processed journal.
Students can add photo and video; readers can give feedback to the writer using comments.

Blogspot - also known as Blogger; owned by Google; quirky if using with iPad or iPhone
WordPress - friendly for iPad and iPhone
Edublogs - education blogs for teachers and students
Live Journal - free and paid versions; free version has some limitations
Twitter in the Classroom - 50 ways to use the microblog (40 character limit) in the classroom
Mimic Twitter in the Classroom